Geronimo Stilton is getting into the movies when he is invited by an old
filmmaker friend, director E.J. Sprocket, to visit the set of Block
Cheddar 4, starring Jack Vole. Convinced that this could make for an
interesting article he brings Thea, Benjamin, and Pandora along. But
soon, they discover that it's not all glitz and glamour as strange
happenings have been plaguing production causing the film to go off
course. Will Geronimo's acting career be over before it starts? Is there
a MOLE on the set? As E.J. would say, "That's show business for ya,
baby!"